Home / 21,969.63-30,323.55-12,543.66

Finding the Fourth Proportional to 21,969.63, 30,323.55 and 12,543.66

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Solution

The fourth proportional to 21,969.63, 30,323.55 and 12,543.66 is: 17,313.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969.63 : 30,323.55 = 12,543.66 : x
  2. Step 2: Convert to fraction form
    21,969.63/30,323.55 = 12,543.66/x
  3. Step 3: Cross multiply
    21,969.63x = 30,323.55 × 12,543.66
  4. Step 4: Simplify right side
    21,969.63x = 380,368,301.19
  5. Step 5: Solve for x
    x = 380,368,301.19/21,969.63
  6. Step 6: Final answer
    x = 17,313.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.